【摘要】：針對虛擬可重構(gòu)電路(virtual reconfigurable circuits,VRC)故障定位難、傳統(tǒng)故障定位方法測試次數(shù)大等問題,提出一種基于改進(jìn)二分查找的VRC快速故障定位技術(shù).當(dāng)VRC規(guī)模不大于兩行(或兩列)時(shí),直接逐行(逐列)定位故障.當(dāng)VRC規(guī)模大于兩行和兩列時(shí),首先執(zhí)行一次行測試和一次列測試,以確定可編程單元(programmable elements,PE)的故障可疑區(qū)域;然后比較故障可疑區(qū)域的行/列數(shù)量,以數(shù)量較少的作為故障測試方向;最后在測試方向上二分故障可疑區(qū)域,根據(jù)行/列測試原理配置電路并執(zhí)行"與"操作,根據(jù)輸出結(jié)果定位故障.當(dāng)故障可疑區(qū)域無法二分時(shí),可定位所有故障PE.故障定位性能分析表明:和常規(guī)的VRC故障定位技術(shù)相比,本文提出的VRC快速故障定位技術(shù)能夠快速檢測并隔離連續(xù)分布的無故障PE,快速縮小測試區(qū)域,大幅度降低故障定位測試次數(shù),且出現(xiàn)最大測試次數(shù)的概率遠(yuǎn)小于前者,單故障和雙故障定位的平均測試次數(shù)縮減量超過50%.基于改進(jìn)二分查找的VRC快速故障定位技術(shù)的可行性和有效性得到驗(yàn)證,具有一定的通用性和工程應(yīng)用價(jià)值.
[Abstract]:In view of the difficulties of fault location in virtual reconfigurable circuit (VRC) and the large test times of traditional fault location methods, a fast fault location technique for VRC based on improved binary search is proposed. When the VRC size is not greater than two rows (or two columns), locate the failure directly row by row (column by column). When the VRC size is larger than two rows and two columns, first perform a row test and a column test to determine the suspect area for the programmable elements PE; then compare the number of rows / columns in the suspect area. In the end, the circuit is configured according to the line / column test principle, and the "and" operation is performed to locate the fault according to the output result. When the suspected fault area cannot be dichotomized, all failure PEs can be located. The analysis of fault location performance shows that compared with the conventional VRC fault location technology, the proposed VRC fast fault location technique can quickly detect and isolate continuously distributed VRC, and reduce the test area quickly. The probability of maximum test times is much lower than that of the former, and the average number of times of single and double fault location is reduced by more than 50 times. The feasibility and validity of the VRC fast fault location technology based on improved binary search is verified, which has a certain generality and engineering application value.
【作者單位】： 軍械工程學(xué)院電子與光學(xué)工程系;中國空氣動力研究與發(fā)展中心超高速空氣動力研究所;
【基金】：國家自然科學(xué)基金(61372039,61601495)
【分類號】：TN70

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